|
SkyStef's weather page |
Enter the ML100 CAPE (²) | (J/kg) |
Enter the max wind speed of entire sounding | (kts) |
Enter the EHI value (³) | |
Enter the Stormspeed value | (kts) |
Enter the SREH 0-3km value | (m²/s²) |
The ST Index is |
(²) = ML100 CAPE = conservative estimate of CAPE, lifting an average parcel in the bottom 100 hPa of a sounding. Maps of CAPE on the internet = surface-based CAPE (or SBCAPE) which starts in lowest 2 meter. Convert SBCAPE to ML100 CAPE estimation table below
STI >3,5 no severe
event.
STI was created to predict severity of thunderstorms in the New York area (USA - Maglaras, G.J. and K.D. LaPenta, 1997). Formula used: STI = 4.943709 - 0.000777xCAPE - 0.004005xWMAX + 0.181217xEHI - 0.026867xSSPD - 0.006479xSREH |
Note: Java script must be enabled
Statcounter